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  1. How close can a refractor focus?

    Started by harryhh, 06-24-2017 03:29 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 561
    Last Post: 06-25-2017 04:59 AM
    by Voyageur  Go to last post
    • Replies: 8
    • Views: 3,142
    Last Post: 04-23-2015 06:44 PM
    by nightbird  Go to last post
    • Replies: 2
    • Views: 391
    Last Post: 12-27-2014 05:22 PM
    by BobDob  Go to last post
  2. Astronomical Distances

    Started by AstroRoberticus, 11-19-2014 07:03 PM
    astronomy, calculate, closest, distance, objects
    • Replies: 1
    • Views: 472
    Last Post: 11-19-2014 07:17 PM
    by AustinPSD  Go to last post
  3. Did you know ??

    Started by Alec in France, 11-17-2013 06:40 PM
    2 Pages
    1 2
    astronomical unit, distance, facts
    • Replies: 14
    • Views: 1,124
    Last Post: 11-18-2013 08:32 PM
    by utd1  Go to last post
  4. Sticky Thread Sticky: Measuring Newtonian Reflector Back-Focus Distance

    Started by AustinPSD, 01-15-2010 11:58 PM
    backfocus, distance, measuring, newtonian, reflector
    • Replies: 9
    • Views: 20,106
    Last Post: 08-09-2012 08:27 PM
    by AustinPSD  Go to last post
    • Replies: 3
    • Views: 828
    Last Post: 01-09-2012 07:55 AM
    by fogfire  Go to last post
  5. traveling long distance on bad road

    Started by illusion, 07-15-2011 05:39 PM
    bad, distance, long, road, traveling
    • Replies: 6
    • Views: 847
    Last Post: 07-16-2011 03:02 PM
    by Hold the Mayo  Go to last post
  6. Amazing astronomical analogies anyone?

    Started by vanislandmike, 07-10-2011 06:54 PM
    amazing, analogies, astronomical, distance, scale
    • Replies: 3
    • Views: 1,071
    Last Post: 07-10-2011 09:04 PM
    by vanislandmike  Go to last post
  7. Error propagation of distance modulus and parallax

    Started by muse19, 06-17-2011 09:43 PM
    distance, error, modulus, parallax, propagation
    • Replies: 0
    • Views: 503
    Last Post: 06-17-2011 09:43 PM
    by muse19  Go to last post
  8. what is the distance between Uranus and Sun?

    Started by RENEE, 03-26-2007 09:19 PM
    distance, sun, uranus
    • Replies: 6
    • Views: 7,749
    Last Post: 06-17-2011 03:37 PM
    by andyp180  Go to last post
    • Replies: 2
    • Views: 637
    Last Post: 05-25-2011 11:41 AM
    by gattberserk  Go to last post
  9. Baader MPCC operating distance?

    Started by DMouse, 05-04-2011 04:35 AM
    baader, distance, mpcc, operating
    • Replies: 0
    • Views: 1,218
    Last Post: 05-04-2011 04:35 AM
    by DMouse  Go to last post
  10. milky way model scale (if stars are sized down to sand grains)

    Started by suavros, 02-24-2011 04:18 PM
    2 Pages
    1 2
    distance, grains, milky, milky way, model, sand, sand grain, scale, sized, stars
    • Replies: 11
    • Views: 4,858
    Last Post: 02-25-2011 01:32 PM
    by ScubaDude  Go to last post
  11. A Question about Star distance and time..

    Started by Kazlok, 01-27-2011 02:46 AM
    distance, question, star, time
    • Replies: 8
    • Views: 735
    Last Post: 01-27-2011 06:09 AM
    by OleCuss  Go to last post
    • Replies: 1
    • Views: 784
    Last Post: 12-22-2010 02:46 AM
    by KathyNS  Go to last post

    Forum:
    Moon Forum

  12. Measuring Distance

    Started by Adam17, 08-21-2010 06:43 PM
    2 Pages
    1 2
    distance, measuring
    • Replies: 14
    • Views: 2,249
    Last Post: 08-27-2010 12:02 AM
    by Adam17  Go to last post
  13. Distance question Earth's Orbit

    Started by Columbo1977, 07-07-2010 09:26 AM
    2 Pages
    1 2
    distance, earth, orbit, question
    • Replies: 10
    • Views: 1,190
    Last Post: 07-09-2010 05:00 PM
    by Astronut74  Go to last post
    • Replies: 1
    • Views: 945
    Last Post: 07-07-2010 09:52 PM
    by astrothad  Go to last post
  14. how do u calculate the distance to stars?

    Started by swapnilbokade, 06-29-2010 01:12 PM
    calculate, distance, stars
    • Replies: 3
    • Views: 801
    Last Post: 06-30-2010 05:11 AM
    by swapnilbokade  Go to last post
  15. The long distance runner.

    Started by Dublin sky watch, 02-02-2010 05:08 PM
    distance, long, runner
    • Replies: 0
    • Views: 424
    Last Post: 02-02-2010 05:08 PM
    by Dublin sky watch  Go to last post
  16. Universe distance age and time issue

    Started by richard3009, 10-08-2009 01:43 PM
    3 Pages
    1 2 3
    age, distance, issue, time, universe
    • Replies: 23
    • Views: 1,881
    Last Post: 10-27-2009 01:28 PM
    by Chambered  Go to last post
  17. Tweaking focus distance on Dob rebuild

    Started by dmmd01, 10-11-2009 05:29 PM
    distance, dob, focus, rebuild, tweaking
    • Replies: 1
    • Views: 891
    Last Post: 10-24-2009 05:03 PM
    by AustinPSD  Go to last post
  18. Distance Between Stars

    Started by Yeldarb88, 09-10-2009 10:05 PM
    data, distance, math, stars, trigonometry
    • Replies: 3
    • Views: 787
    Last Post: 09-10-2009 11:01 PM
    by hope  Go to last post

    Forum:
    Space Forums

  19. Calculate the distance of a UFO?

    Started by MathQuestion, 08-24-2009 06:48 AM
    calculate, distance, ufo
    • Replies: 7
    • Views: 822
    Last Post: 08-27-2009 11:35 PM
    by Spacifieds  Go to last post
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